CN210270840U

CN210270840U - Partition erasing handwriting board

Info

Publication number: CN210270840U
Application number: CN201921153696.6U
Authority: CN
Inventors: 李风华; 许满佳
Original assignee: Shenzhen Wicue Optoelectronics Co Ltd
Current assignee: Shenzhen Wicue Optoelectronics Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-07
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a handwriting pad is erased in subregion, this handwriting pad is erased in subregion include first base member layer, liquid crystal layer and second base member layer, and first base member layer is equipped with first conducting layer towards one side on second base member layer, and second base member layer is equipped with the second conducting layer towards one side on first base member layer, and at least one in first conducting layer and the second conducting layer comprises the electrically conductive region that a plurality of intervals set up, and every electrically conductive region passes through control switch and is connected with the power. The utility model discloses a cut apart into a plurality of electrically conductive regions with the conducting layer of whole face, switch on different electrically conductive regions through control switch to the realization is erased writing of different regions.

Description

Partition erasing handwriting board

Technical Field

The utility model relates to a liquid crystal handwriting pad field, concretely relates to handwriting pad is erased to subregion.

Background

The liquid crystal writing board is a product which can meet the writing requirements of users, and has the advantages of portability, clear handwriting display, repeated writing and the like. When writing, a user applies certain pressure to the handwriting board, the pressure can enable liquid crystal molecules in the handwriting board to deflect, the liquid crystal molecules are enabled to present different colors, and therefore the effect of enabling the handwriting board to display handwriting is achieved.

When a user needs to erase the writing content on the handwriting board, voltage is applied to the handwriting board to generate an electric field, and liquid crystal molecules in the handwriting board deflect in the electric field and restore to an ordered state, so that the writing on the handwriting board is eliminated.

In the prior art, all handwriting is cleared by one key, and the problem of local erasing cannot be realized, so that the use of the handwriting board is limited to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a handwriting pad is erased to subregion, aims at solving the current handwriting pad that can only wholly erase and uses limited problem.

In order to realize the above object, the utility model provides a handwriting pad is erased to subregion, this handwriting pad is erased to subregion include first base member layer, liquid crystal layer and second base member layer, first base member layer is equipped with first conducting layer towards one side on second base member layer, second base member layer is equipped with the second conducting layer towards one side on first base member layer, at least one in first conducting layer and the second conducting layer comprises the electrically conductive region that a plurality of intervals set up, every electrically conductive region passes through control switch and is connected with the power.

Preferably, the control switch comprises a plurality of fixed keys, and each fixed key correspondingly controls the on-off of a circuit between one conductive area and a power supply.

Preferably, the first conductive layer is composed of a plurality of first conductive regions arranged at intervals, the second conductive layer is composed of a plurality of second conductive regions arranged at intervals, the first conductive regions and the second conductive regions are arranged in a one-to-one correspondence manner, and a group of the first conductive regions and the second conductive regions arranged in a correspondence manner are connected with the power supply through the same control switch.

Preferably, the control switch comprises a sliding key, a sliding rail is arranged on one side of the partition erasing handwriting board, and the sliding key can slide along the sliding rail; the plurality of conductive areas are sequentially arranged along the sliding rail, conductive electrodes connected with a power supply are respectively arranged on two opposite sides of the sliding key, and the conductive electrodes are connected with the conductive areas in the first conductive layer and/or the conductive areas in the second conductive layer one by one in the sliding process of the sliding key.

Preferably, the distance between two adjacent conductive areas is less than or equal to 0.5 mm.

Preferably, at least one of the first substrate layer and the second substrate layer is a flexible transparent film.

Preferably, the first conductive layer and the second conductive layer are made of an ITO material or a nano silver material.

The utility model discloses a cut apart into a plurality of electrically conductive regions with the conducting layer of whole face to make every electrically conductive region pass through control switch realize and the power between the circuit break-make, the interval is insulating between the different electrically conductive regions of same conducting layer, does not produce the interact, therefore user's accessible control switch switches on to different electrically conductive regions, erases with the writing handwriting that realizes this region.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a partition erasing handwriting board of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the partition erasing handwriting board of the present invention;

FIG. 3 is a schematic structural diagram of a handwriting pad for zone erasing according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of another embodiment of the partitioned erasing handwriting board of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same elements or elements having the same function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

The utility model provides a handwriting pad is erased in subregion, this handwriting pad is erased in subregion includes first base member layer 1, liquid crystal layer 3 and second base member layer 5, first base member layer 1 is equipped with first conducting layer 2 towards one side of second base member layer 5, second base member layer 5 is equipped with second conducting layer 4 towards one side of first base member layer 1, at least one in first conducting layer 2 and the second conducting layer 4 comprises the electrically conductive region that a plurality of intervals set up, every electrically conductive region passes through control switch and is connected with the power.

In this embodiment, the liquid crystal layer 3 is formed of cholesteric liquid crystal or cholesteric liquid crystal, and a prepolymer polymer material and a chiral dopant used in combination with the cholesteric liquid crystal, and when the liquid crystal layer 3 is subjected to writing pressure, liquid crystal molecules are deflected by being squeezed, and absorb part of the light with partial wavelength in incident light and reflect the unabsorbed part of the light, thereby displaying the written trace in a specific color. When an electric field up to a rated voltage is applied to the liquid crystal layer 3, liquid crystal molecules are rearranged and handwriting is erased.

In this embodiment, the first substrate layer 1 and the second substrate layer 5 may be made of transparent materials, or one of the substrate layers may be made of transparent materials, and the other substrate layer may have a base color different from (preferably, greater than) the writing color of the liquid crystal molecules. The first substrate layer 1 and the second substrate layer 5 can adopt flexible films at the same time, such as insulated flexible films like PET films, PC films and the like, and the zone erasing handwriting board can be attached to a smooth hard board 7 (such as a glass board, an acrylic board and the like), wherein one side of the substrate layer adopting the flexible films is a writing side, and one side of the attached hard board 7 is a non-writing side; alternatively, the first base layer 1 and the second base layer 5 may be made of a flexible film, and the other may be made of a hard substrate (e.g., a glass plate, an acrylic plate, etc.), wherein the base layer side of the flexible film is a writing side, and the base layer side of the hard substrate is a non-writing side. The power supply can adopt an external power supply or a built-in power supply.

In this embodiment, at least one of the first conductive layer 2 and the second conductive layer 4 is formed by a plurality of conductive regions arranged at intervals, each of the conductive regions is connected to a power supply through a control switch, and the two modes are included:

first, the first conducting layer 2 (or the second conducting layer 4) includes a plurality of conducting areas arranged at intervals, that is, the first conducting layer 2 (or the second conducting layer 4) is divided into a plurality of conducting areas, and the second conducting layer 4 (or the first conducting layer 2) adopts a whole surface conducting material, and the partition erasing handwriting board can be correspondingly divided into a plurality of spaced erasing areas 8 according to the structure of the first conducting layer 2. An electrode joint is led out from the second conducting layer 4 made of conducting material on the whole surface, the electrode joint is kept connected with a power supply, an electrode joint is led out from each conducting area of the second conducting layer 4, each electrode joint is connected with the power supply through a control switch (or all the electrode joints are connected with different pins of the control switch), and the control switch controls the on-off of a circuit between each electrode joint electrically connected with the electrode joint and the power supply, so that a user can control whether each conducting area is electrified or not through controlling each control switch, namely, the user controls the erasing or the retention of writing in each conducting area through controlling the on-off of the control switch.

Secondly, the first conducting layer 2 and the second conducting layer 4 respectively comprise a plurality of conducting areas arranged at intervals, namely, the first conducting layer 2 and the second conducting layer 4 are divided into a plurality of conducting areas, each group of conducting areas arranged oppositely corresponds to one erasing area 8 on the partition erasing handwriting board, and the plurality groups of conducting areas arranged oppositely correspondingly divide the partition erasing handwriting board into a plurality of erasing areas 8 at intervals. Similarly, each conductive area is led out an electrode joint, a plurality of electrode joints led out from one conductive layer are connected with a power supply, a plurality of electrode joints led out from the other conductive layer are respectively connected with the power supply through a control switch, or two electrode joints led out from two conductive areas correspondingly arranged in the two conductive layers are connected with the power supply through the same control switch, and the final purpose is to erase or retain the handwriting in the conductive area corresponding to the control switch through the control switch.

In this embodiment, one conductive layer may be separated into a plurality of conductive regions by cutting, laser or bending after being attached to the substrate layer, and then a liquid crystal material is injected between the first conductive layer 2 and the second conductive layer 4 which are oppositely disposed, so as to form a complete handwriting board. Or, the first conductive layer 2 and the second conductive layer 4 in the handwriting board after the liquid crystal material is injected into the handwriting board are respectively divided into a plurality of conductive areas by cutting, laser or bending, that is, the whole handwriting board is divided into a plurality of erasing areas 8.

The embodiment divides the whole conductive layer into a plurality of conductive areas, and makes each conductive area realize the on-off of the circuit between the conductive area and the power supply through the control switch, and different conductive areas of the same conductive layer are insulated at intervals and do not generate mutual influence, so that a user can electrify different conductive areas through the control switch to realize the erasing of the handwriting in the area.

In a preferred embodiment, the control switch includes a plurality of fixed keys 61, and each fixed key 61 controls the connection and disconnection between one conductive region and the power source.

Based on the different partition patterns of the first conductive layer 2 and the second conductive layer 4 in the first embodiment, it is preferable that the conductive layer using the whole conductive material or one of the conductive layers (the first conductive layer 2 and the second conductive layer 4) divided into a plurality of conductive regions is connected to the power supply holding circuit, and each of the other conductive layers divided into a plurality of conductive regions is connected to the power supply by a fixed key 61. The embodiment adopting the partition mode has the advantage of facilitating the operation of a user. The fixed key 61 may take the form of a key mounted on one side of the divisional erasing tablet, and the user closes or opens the circuit between the conductive area corresponding to the fixed key 61 and the power source by pressing the key.

In this embodiment, the outer side of the partition erasing writing pad is wrapped by the outer frame 9, the fixing keys 61 are installed in the outer frame 9, and the wires between the conductive layer and the fixing pieces are all hidden in the outer frame 9.

In a preferred embodiment, the first conductive layer 2 is composed of a plurality of first conductive regions 21 arranged at intervals, the second conductive layer 4 is composed of a plurality of second conductive regions 41 arranged at intervals, the first conductive regions 21 correspond to the second conductive regions 41 one by one, and each group of the first conductive regions 21 and the second conductive regions 41 corresponding to each other is connected with a power supply through a control switch.

In this embodiment, based on two different partition modes for the first conducting layer 2 and the second conducting layer 4 in the first embodiment, in this embodiment, the first conducting layer 2 and the second conducting layer 4 are preferably divided into a plurality of first conducting areas 21 and a plurality of second conducting areas 41 respectively, the plurality of first conducting areas 21 and the plurality of second conducting areas 41 form a plurality of groups of conducting areas (a plurality of erasing areas 8 for erasing the writing pad in a partition manner correspondingly), and each group of first conducting areas 21 and second conducting areas 41 respectively realize on-off control of a circuit between the group of conducting areas and a power supply through one control switch.

The multiple groups of conductive areas can also be connected with different pins of the same control switch (chip), and the on-off control of the circuit between each group of conductive areas and the power supply is realized through the controller of the control switch. In this embodiment, the writing pad for erasing in different areas further includes a communication module electrically connected to the controller, the communication module is used for realizing communication between the mobile terminal of the user and the controller, the user can send an instruction to the controller through the mobile terminal, and the controller controls on/off of circuits between different groups of conductive areas and the power supply through the control switch, so as to realize remote control of erasing the writing in different conductive areas.

In a preferred embodiment, the control switch includes a sliding key 62, a sliding track is disposed on one side of the partition erasing handwriting board, and the sliding key 62 can slide along the sliding track; the plurality of conductive regions are sequentially arranged along the slide rail, and the opposite sides of the slide key 62 are respectively provided with a conductive electrode connected with a power supply, and the two conductive electrodes are connected with the conductive region in the first conductive layer 2 (i.e. the first conductive region 21) and/or the conductive region in the second conductive layer 4 (i.e. the second conductive region 41) one by one in the process that the slide key slides along the slide rail.

First, the present embodiment includes two cases: only one of the first conductive layer 2 or the second conductive layer 4 is divided into a plurality of conductive areas, and assuming that the first conductive layer 2 is composed of a plurality of first conductive areas 21 which are separately arranged, the plurality of first conductive areas 21 are sequentially arranged along the slide rail, and in the process that the slide key 62 slides along the slide rail, one of the conductive electrodes on both sides of the slide key is always electrically connected with the second conductive layer 4, and the other conductive electrode sweeps each first conductive area 21 one by one to form electrical connection. The second conductive layer 2 and the second conductive layer 4 are respectively composed of a plurality of conductive areas, that is, the first conductive layer 2 is composed of a plurality of first conductive areas 21 which are arranged separately, the second conductive layer 4 is composed of a plurality of second conductive areas 41 which are arranged separately, the plurality of first conductive areas 21 and the plurality of second conductive areas 41 are respectively arranged along the slide rail in sequence, and in the process that the slide key 62 slides along the slide rail, the conductive electrodes on two sides of the slide key respectively sweep each first conductive area 21 and each second conductive area 41 one by one so as to form electrical connection with the two first conductive areas 21 and the second conductive areas 41 which are arranged oppositely.

The function of the slide rail includes guiding the slide key 62 and positioning the lead-out position of the electrode tab of the conductive region (the first conductive region 21 and/or the second conductive region 41). In the first case, the electrode contacts of the first conductive areas 21 are located on one side of the slide rail and arranged in sequence, the electrode contact of the second conductive layer is always electrically connected to the sliding key 62 in a manner that the electrode contact of the second conductive layer 4 is electrically connected to a conductive strip that is disposed on the other side of the slide rail and parallel to the slide rail, when the sliding key 62 slides along the slide rail, the conductive electrode on the side of the sliding key 62 facing the conductive strip is in contact with the conductive strip, and the conductive electrode on the side of the sliding key facing the first conductive layer 2 is connected to each of the first conductive areas in sequence. In the second case, each of the first conductive regions 21 and the second conductive regions 41 disposed opposite to each other form a group, a plurality of groups of the first conductive regions 21 and the second conductive regions 41 corresponding to each other are sequentially disposed along the slide rail, the group of the first conductive regions 21 and the group of the second conductive regions 41 disposed opposite to each other are preferably respectively located on two sides of the slide rail, and the electrode connectors led out from the group of the first conductive regions 21 and the group of the second conductive regions 41 are also located on two sides of the slide rail and correspond to each other in position. When the sliding key 62 moves along the sliding rail, the conductive electrodes arranged on both sides of the sliding key 62 are sequentially connected with a plurality of sets of electrode connectors arranged along the sliding rail, when two conductive electrodes of the sliding key 62 are in contact connection with two electrode connectors in one set of electrode connectors, namely, when the two conductive electrodes are connected with a set of first conductive area 21 and second conductive area 41 which are arranged correspondingly to each other, the set of first conductive area 21 and second conductive area 41 and a power supply form a loop, and an electric field is applied to liquid crystal molecules between the two conductive areas, so that handwriting in the area projected by the set of first conductive area 21 and second conductive area 41 is erased.

In this embodiment, the shape of the first conductive region 21 and the second conductive region 41 is preferably rectangular, and the width of the first conductive region parallel to the direction of the sliding rail is preferably less than half of the whole width, so that the sliding effect of the sliding key 62 is more prominent, which is particularly suitable for a blackboard for teaching, and the erasing of a part of blackboard after being divided is completed, so as to fully utilize the space.

In a preferred embodiment, the distance between two adjacent conductive areas is less than or equal to 0.5 mm.

In this embodiment, the shape of the conductive regions is not limited to a rectangle, that is, the separation line between two adjacent conductive regions may be in the form of a straight line, a wavy line, a bent line, or the like. The width of the separation line (i.e. the distance between two adjacent conductive areas) is preferably not greater than 0.5 mm, in the separation line, due to the absence of the conductive layer, the larger the area that does not display handwriting when pressed is, the smaller the distance between two adjacent conductive areas is, the better the separation line is, but considering that when the distance is too small, the two adjacent conductive areas are easy to contact due to bending, so that the purpose of erasing in a subarea cannot be achieved, and through repeated tests, the distance between two adjacent conductive areas is set to be not greater than 0.5 mm in the embodiment, and the problem of writing blank can be almost ignored.

In a preferred embodiment, at least one of the first substrate layer 1 and the second substrate layer 5 is a flexible transparent film, such as a PET film or a PC film.

When the first substrate layer 1 and the second substrate layer 5 both adopt transparent flexible films, either side can be used as a writing side, and the other side can be adhered to a hard plate through OCA optical cement to be used as a non-writing side. When only one of the substrate layers is a flexible transparent film, one side of the substrate layer is used as a writing side, and the other substrate layer is a non-transparent flexible film and is adhered to a hard plate by OCA optical cement as a non-writing side, or the hard plate is used as a non-writing side.

In a preferred embodiment, the first conductive layer 2 and the second conductive layer 4 are made of ITO material or nano silver material.

The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.

Claims

1. The partitioned erasing handwriting board is characterized by comprising a first base layer, a liquid crystal layer and a second base layer, wherein a first conducting layer is arranged on one side, facing the second base layer, of the first base layer, a second conducting layer is arranged on one side, facing the first base layer, of the second base layer, at least one of the first conducting layer and the second conducting layer is composed of a plurality of conducting areas arranged at intervals, and each conducting area is connected with a power supply through a control switch.

2. The sectional erasing handwriting board according to claim 1, wherein said control switch comprises a plurality of fixed keys, each fixed key correspondingly controlling on/off of a circuit between one of said conductive areas and a power supply.

3. The partition erasing handwriting board according to claim 1, wherein said first conductive layer is composed of a plurality of first conductive areas arranged at intervals, said second conductive layer is composed of a plurality of second conductive areas arranged at intervals, said first conductive areas and said second conductive areas are arranged in a one-to-one correspondence, and a group of first conductive areas and second conductive areas arranged in a correspondence with each other are connected to a power supply through the same control switch.

4. The partition erasing handwriting board according to claim 1, wherein the control switch comprises a sliding key, a sliding track is arranged on one side of the partition erasing handwriting board, and the sliding key can slide along the sliding track; the plurality of conductive areas are sequentially arranged along the sliding rail, conductive electrodes connected with a power supply are respectively arranged on two opposite sides of the sliding key, and the conductive electrodes are connected with the conductive areas in the first conductive layer and/or the conductive areas in the second conductive layer one by one in the sliding process of the sliding key.

5. The sectional erase handwriting board according to claim 1, wherein the distance between two adjacent conductive areas is less than or equal to 0.5 mm.

6. The zoned erase writing pad of claim 1, wherein at least one of the first and second substrate layers comprises a flexible transparent film.

7. The sectional erasing handwriting board according to claim 1, wherein said first conductive layer and said second conductive layer are made of ITO material or nano silver material.